Interior surface for a cell phone case



FIG. 1 is a plan view of an interior surface for a cell phone case, in accordance with the present invention;

FIG. 2 is an elevated perspective view thereof; and,

FIG. 3 is an enlarged view of a portion of the interior surface for a cell phone case shown in FIG. 1.

The dot-dash broken lines represent boundaries of the claimed design. The dash-dash broken lines depict portions of the cell phone case that form no part of the claimed design. The surface area within each of the triangular elements also forms no part of the claimed design. 

CLAIM The ornamental design for an interior surface for a cell phone case, as shown and described. 